Where does “ponsyow” come from?

ponsyow (Cornish) comes from Cornish -yow — Pluralization suffix, a variant of -ow.

Ancestry of “ponsyow”, step by step

StepLanguageWordMeaning
1Cornish-yowPluralization suffix, a variant of -ow
Every word from Cornish -yow
ponsyow — Etymology, Origin & Word History | Etymology Explorer